Components of Modern Concrete In this article “Components of Modern Concrete“, it is useful to define concrete and the principal concrete-making components. The concepts that follow are derived from ASTM C 125 and ACI Committee 116. Concrete is a composite substance composed primarily of a binding agent in which aggregate particles are embedded. The binder …
Corrosion Inhibitors in Concrete: Reinforced concrete is an established combination of steel and concrete that has been commonly used for over a century. Steel gives tensile strength to the set, whereas concrete acts as a physical barrier to protect the steel from corrosion. The alkalinity of the concrete, which ranges between pH 12 and 14, …
What is Shrinkage-Reducing Admixtures of Concrete? Shrinkage-reducing concrete admixtures encourage the concrete to expand at approximately the same rate as usual drying shrinkage contracts it. The net length shift of the hardened concrete is sufficiently minimal to avoid shrinkage cracks. Typically, admixture used for shrinkage-reducing is made of polyoxyalkylene alkyl ether or a similar composition. …
Natural Pozzolans in Concrete: Pozzolans can be combined with Portland cement to create blended cements that can be used in place of pure Portland cement in building materials such as concrete and bricks. Natural pozzolans are used in a variety of civil engineering applications, including structural concrete, precast and prestressed components. The article discusses the …
The term “reinforced concrete” refers to a mixture of conventional cement concrete and reinforcement bars. This combination is designed to use both the compressive and tensile strengths of concrete and steel, enabling them to function cooperatively to withstand a variety of loading conditions. The word “reinforced concrete” refers to the fact that steel strengthens the concrete, …
History of Cement: Portland cement is one of the components used to make concrete, which is the most widely used construction material on earth. Concrete comes as the secondary consumed material in the world, noting that the first material is water. This article walks you through the development of cement throughout the history. Introduction Hydraulic …
Silica fume is added to concrete during the mixing process a long with the normal components such as cement, water, fine sand and coarse aggregate. Adding silica fume to concrete significantly enhances the properties of concrete both in the fresh and hardened states. Named a property of concrete? Yes, probably silica fume will enhance that …